Per citar aquest document: http://ddd.uab.cat/record/147716
Long-term effects of changing atmospheric pollution on throughfall, bulk deposition and streamwaters in a Mediterranean forest
Aguillaume Rodríguez-O'connor, Laura (Centre de Recerca Ecològica i Aplicacions Forestals)
Rodrigo Domínguez, Anselm (Centre de Recerca Ecològica i Aplicacions Forestals)
Àvila i Castells, Anna (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2016
Resum: The abatement programs implanted in Europe to reduce SO₂, NO₂ and NH³ emissions are here evaluated by analyzing the relationships between emissions in Spain and neighboring countries and atmospheric deposition in a Mediterranean forest in the Montseny mountains (NE Spain) for the last 3decades. A canopy budget model was applied to throughfall data measured during a period of high emissions (1995-1996) and a period of lower emissions (2011-2013) to estimate the changes in dry deposition over this time span. Emissions of SO₂ in Spain strongly decreased (77%) and that was reflected in reductions for nssSO4² in precipitation (65% for concentrations and 62% for SO4²-S deposition). A lower decline was found for dry deposition (29%). Spanish NO₂ emissions increased from 1980 to 1991, remained constant until 2005, and decreased thereafter, a pattern that was paralleled by NO3(-) concentrations in bulk precipitation at Montseny. This pattern seems to be related to a higher share of renewable energies in electricity generation in Spain in recent years. However, dry deposition increased markedly between 1995 and 2012, from 1. 3 to 6. 7kgha¯¹year¯¹. Differences in meteorology between periods may have had a role, since the recent period was drier thus probably favoring dry deposition. Spanish NH³ emissions increased by 13% between 1980 and 2012 in Spain but NH₄⁺ concentrations in precipitation and NH₄⁺-N deposition showed a decreasing trend (15% reduction) at Montseny, probably linked to the reduction ammonium sulfate and nitrate aerosols to be scavenged by rainfall. NH₄⁺-N dry deposition was similar between the compared periods. The N load at Montseny (15-17kgha¯¹year¯¹) was within the critical load range proposed for Mediterranean sclerophyllous forests (15-17. 5kgha¯¹year¯¹). The onset of N saturation is suggested by the observed increasing N export in streamwaters.
Nota: Número d'acord de subvenció MICINN/CGL2009-13188-C03-01
Nota: Número d'acord de subvenció MICINN/CSD2008-00040
Drets: Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. Creative Commons
Llengua: Anglès
Document: article ; recerca ; acceptedVersion
Matèria: Atmospheric deposition ; Canopy ; Emission reductions ; Nitrogen ; Sulfate ; Throughfall
Publicat a: Science of the total environment, Vol. 544 (Feb. 2016) , p. 919-928, ISSN 0048-9697

DOI: 10.1016/j.scitotenv.2015.12.017


Disponible a partir de: 2018-02-28
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El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2016-03-15, darrera modificació el 2016-06-09



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